Spinach Lab Report

Indoor farmers understand the importance of light. The survival of a plant depends on light; without it, a plant cannot mature into its full-grown state or cannot offer the flowers and fruits it typically provides. Typical indoor farmers utilize LED lights over fluorescent bulbs in order to furnish their plants with the necessary nutrients they need to grow. However, LED lights have a large benefit over their fluorescent bulb alternatives because of the technology seen in LEDs and the light made within an LED chip.

Because carbon dioxide is absorbed by the plant during photosynthesis less carbon dioxide present in the chamber is a sign that photosynthesis is working. The four lights used for this experiment range across the light spectrum on both sides in order to test a wider variety of wavelengths. All lights will be placed directly on the spinach leaf at the same distance so as not to give any spinach leaf a different light intensity, which could affect the data. This experiment will be able to show which light, ranging across the light spectrum, will allow the Spinach to perform photosynthesis more efficiently.

LABORATORY REPORT EXERCISE #5 INTRODUCTION TO THE COMPOUND LIGHT MICROSCOPE, PLANT AND ANIMAL CELLS Name_______________________________Section_____Teacher______________Date________ PRE-LAB QUESTIONS - answer the following questions using your textbook and valid internet sources. Be sure to cite your sources at the end of the prelab. You can type your answers to all questions except #1 and #9 directly into this document and then submit via Canvas. Type the answers for #1 and #9 at the end of the document. 1.

Abstract: The purpose of this experiment was to determine whether the amount of topsoil would influence the growth of radish plants. It was hypothesized that if the amount of topsoil increased by 50% would increase because topsoil contains the essential nutrients which are required for proper plant growth. The principle findings indicated that a medium amount of topsoil is ideal for plant growth as the radish plant potted in 50 ml of topsoil experienced the most growth in comparison to the radish plants potted either in 25 ml or 200 ml of topsoil. Introduction: A healthy layer of topsoil comprises of a mixture of clay, sand, silt, and humus that supply the plants with vital nutrients, such as nitrogen, phosphorus, potassium and other necessary

The sugar produced in the chloroplasts provides plants with chemical energy and carbon frameworks to make all the major organic molecules of cells. Photosynthesis manufactures over 500 billion metric tons of carbohydrates. It is also responsible for the occurrence of oxygen in our

In the light-dependent reactions, energy from sunlight is absorbed by chlorophyll and converted into stored chemical energy in the form of NADPH and ATP. The light-dependent reactions take place in the thylakoid membranes in the granum, in the chloroplast. In the light-independent reactions or Calvin Cycle, the energized electrons from the light-dependent reactions provide energy to assemble carbohydrates from carbon dioxide molecules. The light-independent reactions are sometimes called the Calvin Cycle because carbons are constructed into carbohydrate molecules in a cycle of chemical processes. Even though the light-independent reactions do not use light as a reactant, they require the products of the light-dependent reactions to function.

This energy is stored as sugar (carbohydrates). Plants need light energy (CO2,H2O). Chlorophyll traps light energy to get food. Plants are also called Producers. They are the first in the food chain.

For the radiation experiment, most of the trials support our hypothesis because when we microwaved the seeds 30-60 seconds, barely any of the radish seeds grew. On the contrary, in trial two, when we microwaved them for 30-60 seconds, most of the seeds grew. For the acidity

photosynthesis and cellular respiration are extremely important in the cycle of energy to sustain life simply because nutrients would not metabolize in a productive manner. Both have numerous stages in which the process of energy occurs, and relationships with organelles located in the eukaryotic cell. Photosynthesis is a process by which green plant and other organism manufacture their food using sunlight to synthesize foods from carbon dioxide and water while cellular respiration is the oxidation of organic compounds that occurs within cells, producing energy for cellular processes. Photosynthesis occurs within organelles called chloroplasts. These organelles can absorb light, and are located inside of leaves.

Both have cytochrome complexes and quinone molecules that carry electrons. Respiration consumes oxygen and forms water, whereas photosynthesis splits water and forms oxygen. Complexes I III and IV in the mitochondrial ETC pump hydrogens outside of the mitochondrial matrix, where only plastoquinone pumps protons. The mitochondrial ETC oxidizes NADH and FADH¬¬2 to pump hydrogen, where photosynthesis makes use of energy from photons and reduces water to get electrons. In the process of transporting electrons, ubiquinone does not pump hydrogen molecules out of the mitochondrial matrix as plastoquinone does into the thylakoid lumen for photosynthesis.

The Light Dependent Reaction takes place in the thylakoids, which are located in the chloroplast of a plant cell. During the Light Dependent Reaction, chlorophyll a absorbs light from a wavelength. The light rejuvenates electrons from photosystem II into a high-energy state. The electrons from chlorophyll a then pass from

Photosynthesis is the process of converting light energy to chemical energy that can be used to fuel the organism’s activities. Photosynthesis is when the organism takes in carbon dioxide and releases oxygen. When the sun goes down, the algae start to respire. Respiration is when the organism takes in oxygen and then releases carbon dioxide to create energy.

Background Information: In this experiment I will be investigating the impact of light intensity on the rate of water uptake, due to transpiration, by attaching a shoot from a leafy plant in the capillary tube of a potometer, and then measuring how long it takes for a bubble to move a set distance. The faster the bubble moves, the greater the rate of transpiration. I will be placing one plant in an environment where it is exposed to high-light intensities, and another plant in an environment where it is exposed to low-light intensities. Transpiration is the process of the transport of water and nutrients up the the plant from the roots to the leaves.

Photosynthesis and cellular respiration are crucial for our existence because without it, we wouldn’t be able to function properly. We need them to survive. Photosynthesis is the process in which plants use sunlight and water to produce oxygen. If photosynthesis didn’t exist, we wouldn’t exist.

The hormone cytokinin causes this after the exposure of light. Chloroplasts contain chlorophyll and due to this the plant turns green. 1.1 Research question For this experiment, I want to find out what will happen to cress seeds that are etiolising (growing in the dark) when they are then exposed to light. To conduct this experiment, I came up with the following research question: ‘Will exposure to light after a set period of etiolation cause a plant to de-etiolize?’ 2.